Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Biotite from
Altavaara Deposit, Kiruna, Norrbotten County, Sweden


Locality type:Deposit
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Altavaara Deposit, Kiruna, Norrbotten County, Sweden
Data Identifiers
Mindat Occurrence Record ID:629470
Long-form Identifier:1:3:629470:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
11.7km (7.3 miles) ⓘTuolluvaara Mine, Kiruna Town Mining District, Kiruna, Norrbotten County, Sweden
16.1km (10.0 miles) ⓘLuossavaara Mine, Kiruna Town Mining District, Kiruna, Norrbotten County, Sweden
16.9km (10.5 miles) ⓘKiirunavaara Mine, Kiruna Town Mining District, Kiruna, Norrbotten County, Sweden
19.6km (12.2 miles) ⓘRakkurijärvi Cu-(Au) deposit, Kiruna Town Mining District, Kiruna, Norrbotten County, Sweden
19.8km (12.3 miles) ⓘKalixforsbron, Kiruna, Norrbotten County, Sweden
21.9km (13.6 miles) ⓘPahtohavare Cu-Au deposit, Kiruna Town Mining District, Kiruna, Norrbotten County, Sweden
23.2km (14.4 miles) ⓘPainirova, Kiruna, Norrbotten County, Sweden
28.3km (17.6 miles) ⓘLeveäniemi Mine, Svappavaara, Kiruna, Norrbotten County, Sweden
37.0km (23.0 miles) ⓘNunasvaara, Vittangi, Kiruna, Norrbotten County, Sweden
47.4km (29.5 miles) ⓘPattok, Gällivare, Norrbotten County, Sweden
References
Erland Grip, Frietsch, Rudyard (1973) Malm i Sverige 2: Norra Sverige [Ore in Sweden 2: Northern Sweden]. Almqvust & Wiksell, Stockholm. p.1-295.
 
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